TSEV KAWM NTAWV NTAWM LUB ROOJ (3)

Niaj hnub no, cia peb tham txog grit, ib qho ntawm cov ntsiab lus tseem ceeb cuam tshuam rau kev sib tsoo.

Dab tsi yog grit? Grit yog hais txog qhov loj me me ntawm cov nplej abrasive, piv txwv li, grit tooj 80 # txhais tau hais tias qhov loj ntawm cov nplej tuaj yeem dhau los ntawm lub sieve nrog 80 qhov ib nti. Raws li qhov kawg ntawm kev sib tsoo, nws tuaj yeem muab faib ua ntxhib sib tsoo, zoo sib tsoo thiab polishing.

Rough sib tsoo: nws yog siv los tshem tawm feem ntau ntawm cov npoo. Vim nws txoj kev sib tsoo siab, nws tau muab tso rau hauv thawj txheej txheem.

Kev sib tsoo zoo: lub hom phiaj yog kom muaj peev xwm tswj tau qhov tseeb geometry. Thiab zoo tawg qhov tob, thiab npaj rau polishing. Polishing yog txheej txheem kawg, lub hom phiaj yog tshem tawm cov txheej nplhaib tawg, sab laug los ntawm kev sib tsoo thiab kev sib tsoo zoo kom ua tiav qhov chaw du.

Tsis yog txhua qhov kev sib tsoo yuav tsum muaj peb kauj ruam no. Qee qhov tsuas yog yuav tsum tau polished nrog lub log sib tsoo ntawm ib qho me me: Yog tias cov kev xav tau siab dua, qee qhov tseem xav tau ntau tshaj peb cov txheej txheem ua haujlwm.

Yuav xaiv grit li cas? Kev xaiv ntawm grit feem ntau txiav txim siab qhov kev sib tsoo ua haujlwm thiab qhov kev xav tau ntawm qhov roughness ntawm lub workpiece. Feem ntau, grit tuaj yeem xaiv raws li cov hauv qab no.

(1) Thaum qhov ua tiav ntawm qhov kawg thiab qhov tseeb ntawm cov khoom ua haujlwm yuav tsum tau siab, lub log sib tsoo nrog qhov loj me me yuav tsum raug xaiv, yog tias qhov kev xav tau ntawm cov khoom siv tau siab thiab qhov ua tiav ntawm qhov tsis siab, lub log sib tsoo nrog yuav tsum tau siv ib coarser grain loj.

(2) Thaum qhov chaw sib cuag ntawm lub log sib tsoo thiab cov khoom ua haujlwm loj, lossis qhov sib tsoo qhov tob loj, lub log sib tsoo nrog me ntsis coarser grain loj yuav tsum tau xaiv los txo cov cua sov tiam.

(3) Thaum cov khoom sib tsoo nrog cov thermal conductivity tsis zoo, lossis cov khoom ua haujlwm uas ua rau kub, deformation thiab kub hnyiab, cov nplej loj yuav tsum coarser.

(4) Thaum sib tsoo cov khoom siv hlau lossis cov hlau mos (xws li tooj dag, tooj liab, tooj liab, thiab lwm yam), lub log sib tsoo yog yooj yim los thaiv. Lub sijhawm no, lub log sib tsoo nrog lub coarser grain loj yuav tsum tau xaiv. Ntawm qhov tsis sib xws, rau cov khoom siv nrog lub siab hardness (tawv tawv tshwj tsis yog).

(5) Thaum ua tiav ntawm lub tshuab sib tsoo nrog kev nruj dua, siv lub log coarser sib tsoo.

(6) Thaum tsim kev sib tsoo, yog tias koj xav tau cov duab khaws cia ntawm qhov chaw ua haujlwm ntawm lub log sib tsoo kom zoo, qhov loj me me yuav tsum raug xaiv.

Yog tias koj txaus siab rau peb cov kev paub sib qhia, thov txuas ntxiv mus rau peb lub vev xaib lossis email rau peb los qhia koj cov kev paub ntawm kev sib tsoo log.